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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (1): 191-194.doi: 10.11924/j.issn.1000-6850.2011-2204

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

控释尿素接触施用对番茄幼苗生长的影响

许俊香 倪小会 曹兵   

  • 收稿日期:2011-07-29 修回日期:2011-10-09 出版日期:2012-01-05 发布日期:2012-01-05
  • 基金资助:

    延迟释放型作物专用肥研制与应用

Effect of Co-situs Application of Controlled Release Urea on the Growth of Tomato Seedlings

  • Received:2011-07-29 Revised:2011-10-09 Online:2012-01-05 Published:2012-01-05

PDF (PC)

937

摘要：

为提升蔬菜育苗的养分管理水平、培育壮苗，从而为作物高产打下基础，以不同释放期的控释尿素为试验材料，通过穴盘育苗试验研究了控释尿素与番茄种子接触施用对番茄幼苗生长的影响。结果表明：PCU50处理出现烧苗现象，番茄幼苗生长受到抑制，与常规育苗相比，株高、茎粗、叶绿素分别降低27.9%、11.1%和10.6%，地上部干重、根干重和壮苗指数则分别降低47.2%、35.6%和35.8%。而PCU130处理的番茄幼苗长势良好，茎粗、叶绿素含量和壮苗指数相比常规育苗分别增加3.70%、10.0%和35.0%，根系总吸收面积和活跃吸收面积分别增加95.1%和44.7%。控释肥与种子接触施用关键在于合理的控释肥释放期的选择，综合考虑番茄幼苗各项生长指标，认为释放期为130天的控释尿素更为适宜。

关键词: 因子分析法, 因子分析法, 农业现代化, 聊城市

Abstract:

To improve the level of nutrient management and cultivate seedlings, this paper studied the influence of controlled-release urea on tomato seedling growth through the experiment of seedling nursery in plug tray. The results showed that the co-situs application of PCU50 inhibited growth of tomato seedlings. The plant height, stem diameter and chlorophyll content decreased by 27.9%, 11.1% and 10.6% respectively compared to those of conventional seedling, while plant dry weight, root dry weight and seedling index decreased by 47.2%, 35.6% and 35.8%. However, PCU130 application increased the stem diameter, chlorophyll content and seedling index of tomato seedlings by 3.7%, 10.0% and 35.0% respectively in comparison to conventional seedling. Moreover, PCU130 treatment significantly increased both total root absorption area and root active absorption area by 95.1% and 44.7%. In conclusion, the fertilizer of PCU130 was suitable for tomato seedling growth.

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